ATSAMG55J19A-MUT Equivalent & Substitute Parts

Part Overview

The ATSAMG55J19A-MUT is an ARM Cortex-M4 32-bit microcontroller from Microchip Technology's SAM G55 series, operating at 120MHz with 512KB Flash memory and 176KB RAM. This device is designed for embedded applications requiring moderate processing power, integrated connectivity interfaces, and comprehensive peripheral support. The part maintains Active product status and is widely available in inventory. Identifying equivalent and substitute parts is essential for supply chain continuity, design flexibility, and procurement optimization when the primary part number becomes unavailable or when alternative packaging options are required.

Key Parameters

Parameter	Value
Manufacturer	Microchip Technology
Series	SAM G55
Core Processor	ARM Cortex-M4
Core Size	32-Bit Single-Core
Speed	120MHz
Program Memory Size	512KB (512K x 8) FLASH
RAM Size	176K x 8
Number of I/O	48
Voltage Supply (Vcc/Vdd)	1.62V ~ 3.6V
Data Converters	A/D 8x12b
Connectivity	I2C, SPI, UART/USART, USB
Peripherals	DMA, I2S, POR, PWM, WDT
Operating Temperature	-40°C ~ 85°C (TA)
Package / Case	64-VFQFN Exposed Pad (7.5x7.5)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	3 (168 Hours)

Substitute Part Grouping Explanation

Substitution eligibility for the ATSAMG55J19A-MUT is determined by strict equivalence across the following critical parameters:

Core Substitution Criteria:

Manufacturer: Microchip Technology
Series: SAM G55
Core Processor: ARM Cortex-M4
Core Size: 32-Bit Single-Core
Speed: 120MHz
Program Memory: 512KB FLASH
RAM: 176K x 8
I/O Count: 48 pins
Voltage Supply Range: 1.62V ~ 3.6V
Package Type: 64-VFQFN Exposed Pad
Mounting: Surface Mount

Parts meeting all these parameters are classified as direct functional equivalents. Variations in packaging format (Cut Tape vs. Digi-Reel) do not affect electrical or mechanical compatibility and represent logistical substitutes suitable for identical circuit implementations.

Parameter Comparison

Parameter	ATSAMG55J19A-MUT	ATSAMG55J19B-MUT	Equivalence
Manufacturer	Microchip Technology	Microchip Technology	Identical
Series	SAM G55	SAM G55	Identical
Core Processor	ARM Cortex-M4	ARM Cortex-M4	Identical
Core Size	32-Bit Single-Core	32-Bit Single-Core	Identical
Speed	120MHz	120MHz	Identical
Program Memory	512KB FLASH	512KB FLASH	Identical
RAM	176K x 8	176K x 8	Identical
I/O Count	48	48	Identical
Voltage Supply	1.62V ~ 3.6V	1.62V ~ 3.6V	Identical
Data Converters	A/D 8x12b	A/D 8x12b	Identical
Connectivity	I2C, SPI, UART/USART, USB	I2C, SPI, UART/USART, USB	Identical
Peripherals	DMA, I2S, POR, PWM, WDT	DMA, I2S, POR, PWM, WDT	Identical
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	Identical
Package / Case	64-VFQFN Exposed Pad	64-VFQFN Exposed Pad	Identical
Mounting Type	Surface Mount	Surface Mount	Identical
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
MSL Rating	3 (168 Hours)	3 (168 Hours)	Identical
Packaging Format	Standard	Cut Tape (CT) & Digi-Reel®	Logistical Variant

Engineering Selection Recommendations

The ATSAMG55J19B-MUT is a direct functional equivalent to the ATSAMG55J19A-MUT. Both parts are manufactured by Microchip Technology, maintain Active product status, and carry identical electrical specifications, memory configurations, peripheral sets, and compliance certifications (ROHS3, REACH Unaffected). The distinction between these part numbers reflects packaging and distribution format only. Selection between these parts should be based on procurement requirements: standard packaging for ATSAMG55J19A-MUT or Cut Tape/Digi-Reel format for ATSAMG55J19B-MUT. Both parts are suitable for direct substitution in circuit designs without modification to PCB layout, schematic, or firmware.

Frequently Asked Questions (FAQ)

Q: Can ATSAMG55J19B-MUT replace ATSAMG55J19A-MUT in production designs?

A: Yes. Both parts are electrically and mechanically identical. The difference is packaging format. ATSAMG55J19B-MUT is available in Cut Tape and Digi-Reel formats, while ATSAMG55J19A-MUT uses standard packaging. No design changes are required.

Q: Are there differences in firmware compatibility between these part numbers?

A: No. Both parts use the same ARM Cortex-M4 core, identical memory configuration, and identical peripheral set. Firmware compiled for one part executes identically on the other.

Q: What does the packaging format difference mean for assembly?

A: ATSAMG55J19A-MUT arrives in standard packaging suitable for manual or automated pick-and-place operations. ATSAMG55J19B-MUT in Cut Tape format is optimized for high-volume automated assembly lines. Both mount identically on 64-VFQFN footprints.

Q: Are compliance certifications identical?

A: Yes. Both parts carry ROHS3 compliance, REACH Unaffected status, and identical MSL ratings (3, 168 Hours). No compliance differences exist.

Q: Can I mix these part numbers in the same production batch?

A: Yes. Since all electrical and mechanical parameters are identical, mixing ATSAMG55J19A-MUT and ATSAMG55J19B-MUT in the same assembly batch presents no technical risk. Verify with your procurement and quality processes for any internal requirements.

Q: What is the inventory difference between these parts?

A: ATSAMG55J19A-MUT has 4,597 pieces in stock. ATSAMG55J19B-MUT has 1,000,299 pieces in stock. The higher inventory of ATSAMG55J19B-MUT reflects its availability in Cut Tape/Digi-Reel distribution channels.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message